From 3ec03e61f49231502ca7e5e87d7895bea90f11bc Mon Sep 17 00:00:00 2001
From: Mitchell Riedstra <mitch@riedstra.dev>
Date: Tue, 31 Jan 2023 09:18:47 -0500
Subject: Allow for loading of environment variables on start

---
 dwm.c  |  3 +++
 util.c | 19 +++++++++++++++++++
 util.h |  1 +
 3 files changed, 23 insertions(+)

diff --git a/dwm.c b/dwm.c
index f18658b..d9ea0d7 100644
--- a/dwm.c
+++ b/dwm.c
@@ -2455,6 +2455,9 @@ main(int argc, char *argv[])
 	if (!(dpy = XOpenDisplay(NULL)))
 		die("dwm: cannot open display");
 	checkotherwm();
+	FILE *fh;
+	if ((fh = fopen(".env", "r")))
+		readEnv(fh);
 	setDmenuFlags();
 	setup();
 #ifdef __OpenBSD__
diff --git a/util.c b/util.c
index 06685ad..7ec62ba 100644
--- a/util.c
+++ b/util.c
@@ -64,3 +64,22 @@ reMatch(const char *regex, const char *str) {
 
     return rc;
 }
+
+int
+readEnv(FILE *fh)
+{
+	int ret;
+	char *name = alloca(1024*sizeof(char)), *value = alloca(8192*sizeof(char));
+
+	while (1) {
+		if ((ret = fscanf(fh, "%1023[^=]=%8191[^\n]\n", name, value)) == EOF)
+			break;
+		else if (ret == 0)
+			break;
+
+		fprintf(stderr, "Setting: '%s' = '%s'\n", name, value);
+		setenv(name, value, 1);
+	}
+
+	return 0;
+}
diff --git a/util.h b/util.h
index cd7c08d..547d976 100644
--- a/util.h
+++ b/util.h
@@ -7,3 +7,4 @@
 void die(const char *fmt, ...);
 void *ecalloc(size_t nmemb, size_t size);
 int reMatch(const char *regex, const char *str);
+int readEnv(FILE *fh);
-- 
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